Multi-antenna transmitter for multi-tone signaling
US-9252858-B2 · Feb 2, 2016 · US
US10425134B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10425134-B2 |
| Application number | US-201113233006-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 14, 2011 |
| Priority date | Apr 2, 2004 |
| Publication date | Sep 24, 2019 |
| Grant date | Sep 24, 2019 |
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Official abstract text for this publication.
A system and method are described which enable planned evolution and obsolescence of multiuser wireless spectrum. One embodiment of such a system includes one or multiple centralized processors and one or multiple distributed nodes that communicate via wireline or wireless connections. The distributed nodes may share their identification number and other reconfigurable system parameters with the centralized processor. The information about all distributed nodes may be stored in a database that is shared by all centralized processors. The reconfigurable system parameters may comprise power emission, frequency band, modulation/coding scheme. The distributed nodes may be software defined radios such as FPGA, DSP, GPU and/or GPCPU that run algorithms for baseband signal processing and may be reconfigured remotely by the centralized processor. A cloud wireless system may be used wherein the distributed nodes are reconfigured periodically or instantly to adjust to the evolving wireless architecture.
Opening claim text (preview).
The invention claimed is: 1. A system that enables planned evolution and obsolescence of multiuser wireless spectrum comprising: one or multiple centralized processors (CPs) communicatively coupled to one another; and a plurality of distributed nodes comprising wireless transceiver stations communicatively coupled to the centralized processors over wireline or wireless connections, the plurality of distributed nodes concurrently transmitting and receiving wireless signals to and from a plurality of wireless user devices at the same frequency to form a plurality of non-interfering data links with the plurality of wireless user devices, the CPs dynamically adjusting a configuration of the distributed nodes in accordance with evolutionary changes to network architectures, wherein at least a portion of the plurality of distributed nodes are within wireless range of one another, the portion of the plurality of distributed nodes to transmit and receive the wireless signals to create points of zero radio frequency (RF) energy at locations of at least a portion of the user devices to form the non-interfering data links. 2. A method that enables planned evolution and obsolescence of multiuser wireless spectrum comprising: communicatively coupling two or more centralized processors (CPs) to one another; and communicatively coupling a plurality of distributed nodes comprising wireless transceiver stations to the one or multiple centralized processors over wireline or wireless connections, the plurality of distributed nodes concurrently transmitting and receiving wireless signals to and from a plurality of wireless user devices at the same frequency to form a plurality of non-interfering data links with the plurality of wireless user devices, the CPs dynamically adjusting a configuration of the distributed nodes in accordance with evolutionary changes to network architectures, wherein at least a portion of the plurality of distributed nodes are within wireless range of one another, the portion of the plurality of distributed nodes to transmit and receive the wireless signals to create points of zero radio frequency (RF) energy at locations of at least a portion of the user devices to form the non-interfering data links.
Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] · CPC title
the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title
Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems · CPC title
Network planning tools · CPC title
Channel coefficients, e.g. channel state information [CSI] · CPC title
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